Al含量对FeCrNiCoCu高熵合金涂层组织结构及冲蚀性能的影响

采用放电等离子烧结(SPS)制备不同Al含量的AlxFeCrNiCoCu(x=0, 1, 2, 3)高熵合金涂层. 通过XRD、SEM和冲蚀磨损等检测方法，研究了Al含量对该高熵合金涂层的组织及冲蚀磨损性能的影响. 结果表明：FeCrNiCoCu高熵合金的微观组织主要为简单FCC结构的富Cu相及富Al相. 随着Al元素增加，涂层的微观结构出现由FCC向BCC的转变. 同时，涂层的硬度、耐冲蚀性也显著提高. 随着冲蚀角度的增加，涂层的冲蚀磨损量逐渐增加，表现出脆性材料的冲蚀磨损特性. 在冲蚀角度为90°时，随着Al元素的增加，涂层的主要冲蚀磨损机理逐渐由微切削和锻造挤压转变为犁削.

High-entropy alloy coatings AlₓFeCrNiCoCu (where x = 0, 1, 2, 3) with varying Al contents were fabricated via spark plasma sintering (SPS). The effects of Al content on the microstructure and erosion wear performance of these coatings were studied using characterization techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), and erosion wear testing. The results indicate that the microstructure of the FeCrNiCoCu high-entropy alloy primarily consists of Cu-rich and Al-rich phases with a simple face-centered cubic (FCC) structure. As the Al content increases, the microstructure of the coatings undergoes a transition from FCC to body-centered cubic (BCC) structure. Additionally, the hardness and erosion resistance of the coatings are significantly enhanced. With the increase of erosion angle, the erosion wear loss of the coatings gradually rises, showing the erosion wear characteristics of brittle materials. When the erosion angle is 90°, the main erosion wear mechanisms of the coatings gradually shift from micro-cutting and forging extrusion to ploughing as the Al content increases.

搜集汇总

背景与挑战

背景概述

该数据集研究了铝含量对FeCrNiCoCu高熵合金涂层组织结构和冲蚀性能的影响，通过制备不同铝含量的涂层并分析其微观结构、硬度和冲蚀磨损行为。结果显示，增加铝含量导致涂层从FCC结构向BCC结构转变，同时提高硬度和耐冲蚀性，并改变冲蚀磨损机理。数据集提供了实验数据，支持高熵合金涂层在摩擦学领域的性能优化研究。